{
  "manageEntity": {
    "action": "Update",
    "entityId": "674646578",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x14c1373343cee91a8ea88e18d61248460a7daf32a30fb3c306c06d7f8671f834",
    "signature": "0x3c6b8ebc347c39362749a6e7ad334634b1b26ad724ee3233efc57efc8df1680f336ed1c3de00d057bd1130eafad4294e81bd0bdd1b103f9a93e514fdd490123c1c",
    "signer": "0x9AC1C4307292501c693bF6378F6E04B88640554c",
    "userId": "674646578"
  }
}