{
  "manageEntity": {
    "action": "Update",
    "entityId": "122609938",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3259d81bf91cfe626f4e2a4c390ad49220e4ff56a9d20e61ac03fda4267bba58",
    "signature": "0xebc2eb2914ea65557d9e158977f3f957e6a816ab2d16c93112973889bf3189d80526aa75a479dd532ce77d1f8fdd9938e7fb98f04f3e68248b951223db57047b1b",
    "signer": "0x83e18d8f2181D38D405A623A4967ef20C4A7f056",
    "userId": "122609938"
  }
}