{
  "manageEntity": {
    "action": "Update",
    "entityId": "547790908",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0db00d8ced0b6886816004d11e0bed6b42a7d4d81cc0c40868c9548b6f77b7b0",
    "signature": "0xe4d381ecbe51edacd115dde747a9114f6a06f44396f8243cbfbe57c0c8bbd59d31121bca396ffeaca0e6d5aed235b4e1e9ec51bf64f3cec22d8184de9aa45ea01c",
    "signer": "0x16180b98Ee6A1b48f7a45d606AC6B1897005f3a5",
    "userId": "547790908"
  }
}