{
  "manageEntity": {
    "action": "Update",
    "entityId": "819927783",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa5cdf4cc3e2440b356d056989071707f3c797e1e3d2a67640215489ebf54466b",
    "signature": "0xe1e912eb364fe4deb0496aa4ae325fa698a21de5b4941924222aeed76b2da42b17cb645ce93bd5b8f0bee4c05c4d1d4a19d6f125d855e1a0e9460045a0b1a91a1b",
    "signer": "0x45dAf7d8C91b01b2F5E651081b5910a6b272928D",
    "userId": "819927783"
  }
}