{
  "manageEntity": {
    "action": "Update",
    "entityId": "489311557",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x20eab133e51389ef32417108a4a0e305bf43627fe7ab046771559d93f439dfd5",
    "signature": "0xea87285f42c17e8101e38b3f8a56141d52b97b39cdc2338f870587cf643296760ca657dd736e167d9d0bfec9e882f17c4156482a0bbd6c928af54ede39fdc2aa1c",
    "signer": "0x9df51FBCE788c3885Bd9f46979B1bbDA8f8Db2A1",
    "userId": "489311557"
  }
}