{
  "manageEntity": {
    "action": "Update",
    "entityId": "380949464",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2f3cf1784d9726e6fcd4127b81e2e2b9dd7e47276c01010ed71fd68c3f6703a2",
    "signature": "0x09aa7dd2987f70f620e2a6fe4c0ea89ab60ebe46449623856ca5fa074dda92c4284d9b451fc23c95d3d77a120a3bd305ec538c778b7f0123cb312d00314475141c",
    "signer": "0x40683F9eb9281D766ca0e616A897BA059cDD7aF3",
    "userId": "380949464"
  }
}