{
  "manageEntity": {
    "action": "Update",
    "entityId": "745723312",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x90232bbd0023da8543b657f001bf6f0b3d156a4f3cde7b9a2db81c936da46e84",
    "signature": "0x8164788e8689c1ab3c4b7141fc417aab542ae3088ffaa900750efffc7e93eb4549305d930727ce85e7aaf20267b332d04e20f1885dc064e793874fc9596cbaf21c",
    "signer": "0x7ecD8f8E7fA97dC1b21dA7021DAc66098c6f1b8A",
    "userId": "745723312"
  }
}