{
  "manageEntity": {
    "action": "Update",
    "entityId": "190634058",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera6qesfydbwokeoh3neomijizrfn4llubza7j35lhp4hdfniraqgda\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1372591536},{\"type\":\"playlist\",\"playlist_id\":1672624387},{\"type\":\"playlist\",\"playlist_id\":480760348}]}}}",
    "nonce": "0x071bd553b3aef0e4fee49abfbefd06f373e6e1c8bff1a622ac6e56927aa4c798",
    "signature": "0x945d618e917edddcbbd2c2074cea9f96243f2261194a3e62b8a92370ea91f435735d2f63b9ee3bf80a90cf527ae41b102b68a5ac12bb425bc143923584a33bc91c",
    "signer": "0x28a91687f22d454063c52F6D9d9e6de3A0f3c09E",
    "userId": "190634058"
  }
}