{
  "manageEntity": {
    "action": "Update",
    "entityId": "341968537",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf19251bafb7d96a76a722d95dd04c703f69ec947c568619c3ca2176f6289fc7f",
    "signature": "0x787be35658e38d326a106ff151ffd197272664ea3ade5ac368956d26686846ce5d715b89b386bcc3e99bd3ebff577d9ebc37ee434a2cba3ebdf78b2968fdd49d1b",
    "signer": "0x319C2aEc33e193Cf3501B6Eab988C9104f8175Ef",
    "userId": "341968537"
  }
}