{
  "manageEntity": {
    "action": "Update",
    "entityId": "891501053",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierada3jpbgh3f6msh4p7wydkqtun5a5tfka3jxlxcz5axvs7uwtjesa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1378955558},{\"type\":\"playlist\",\"playlist_id\":107477260}]}}}",
    "nonce": "0xdcaa10490c5b4af62d7ceca5d957cf95881bc66ad47e3b2dbdea828fcf4b56f0",
    "signature": "0x100d78b9d5f4645333d0b889c90b3afa899b6aa43083e099f1627fa140853c066fe17beb8eabcebe794c2d9276d17222dd26ddb5ea738bb75e14e157afd328bb1c",
    "signer": "0x57cAEe5eA82f42935417a3Ee55D1a1c8E8205709",
    "userId": "891501053"
  }
}