{
  "manageEntity": {
    "action": "Update",
    "entityId": "3838526",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc255a20a7ee4fa9dc911e5ad3b5949a325f70718d777a24fa48637ba6c7a8bc2",
    "signature": "0x4c053d3038345f29c0ce4af024a52fa4ae3c0b6a3ae2ac2c2bbf82209a971f9440f689bc7aa79f06a6f9e8a0ca601d21923d1cfc843083cca58d220503728acc1c",
    "signer": "0x6eE5b8c52A9940e627594Cd921E79Be1015CB23D",
    "userId": "3838526"
  }
}