{
  "manageEntity": {
    "action": "Update",
    "entityId": "277331768",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x68056ffb9080552607d3c6aca3331fcd2917ffa950f030f4316f73f997f618bd",
    "signature": "0xb09c4757130e36f8dc7599bb259ae8e730329eca8bc486ca28605a281807261843637fa620e2c7aed28830a4cb6e5f21315ec13eebbd373691fabe3ec6a8c8d21c",
    "signer": "0xb800ff8935668D1a1dD02B97b37e7bE893d6f531",
    "userId": "277331768"
  }
}