{
  "manageEntity": {
    "action": "Update",
    "entityId": "293976821",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf9f3bcde8e8bd5ed7726588f24360b7e1fe5883b6d95cb059ffd4547d25175c8",
    "signature": "0xa6aa449a5cb9ed089fa9237b8494751b20cc9b108ad8eef174637dc7f9e44f14416ee8ccab400f1cdbd2693420ff406c8a0611c8cbd5d9be4f476abcb1bf42b81c",
    "signer": "0xA9Fcc0C9caCD5528EA8E6874754D8533Ad1a87F4",
    "userId": "293976821"
  }
}