{
  "manageEntity": {
    "action": "Update",
    "entityId": "724462955",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2151f7b9ae1f001982be0a5d38e069ffe6c68e564befd5bc7a4447735decb218",
    "signature": "0x7e1ce5a93e128676ce818220b786ce3c812987955a8f4d9e4fc7a8b6894185590a293900057f516cfc0f3db288516a6690af9e85b7466a92ecf9d82bd6987f511b",
    "signer": "0xef1519506BFFAD25b04180540D07fD9c4DE91F78",
    "userId": "724462955"
  }
}