{
  "manageEntity": {
    "action": "Update",
    "entityId": "511698349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierap6uxac4phipardwj5hqmlipvwkjkbl5dnvypxq63muykml77fdjq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":413945353}]}}}",
    "nonce": "0xf4efd245750f6cac7cafcbcddeb2f2fe29e077700e54608c40dec137b0d84c6a",
    "signature": "0x2f7ee824c66f920ef80003202e640843a7a98c259fdd38466113420ba8ddea896b26d25492533ff202d904cf3d2572f7ebd60c30c7a248b7303a12d8000eaaa61c",
    "signer": "0x10bb2D17C512CF574a9c388986b5f2cDbE1dC22A",
    "userId": "511698349"
  }
}