{
  "manageEntity": {
    "action": "Update",
    "entityId": "201996771",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraububvsdjwsfzko4yj6fsznxwi3uovjubmbt6su7xqddgyr2xty2q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":307500135},{\"type\":\"playlist\",\"playlist_id\":687665635},{\"type\":\"playlist\",\"playlist_id\":1030097955}]}}}",
    "nonce": "0x4ad82dea3378ae470d184a0cd2623f59a58f5130cf6f51fc21dbb576e38133ab",
    "signature": "0x028b8d05943ce2adcfd0640d38243f681cd6e074d2f01b69c08864c120be1cd30361f4519432e883439945ff5198286b2c1a0559a25d9bda02e8dd6658cd20db1b",
    "signer": "0xd1CdfC852326b8427841805E9aA02D39705c750c",
    "userId": "201996771"
  }
}