{
  "manageEntity": {
    "action": "Update",
    "entityId": "964025330",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf2bfce9b7383d139c97102729582252d2f2331677e10c0905a23468b98faeea5",
    "signature": "0x39c70a98b225a978cad2592383c2acbd8cf4ba31b181b9565be35ed6fe5d4a88649175b97c14e4834c16c7831f6223536b358d3f34221f73a4add815030c15781c",
    "signer": "0x18e80443A33c763307bac21D4Ec54B381DFC58cA",
    "userId": "964025330"
  }
}