{
  "manageEntity": {
    "action": "Update",
    "entityId": "201996771",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera6xxm2etraksei6an3flddwkbpnhb5sdqyviz4ijfo43apkpmvu2a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":307500135},{\"type\":\"playlist\",\"playlist_id\":687665635}]}}}",
    "nonce": "0x3a6832aa73dd2e88852fa3583a227949cfc3962fe1ac28ea4242d666bec65b89",
    "signature": "0x524e016fb104dd496a7db99eda10243e00c973c542e0c4158238d91d7c8349c715316df247e7741ade5d1d93f900e843a738d37d2e6df96270515cfeb4c7dfb81b",
    "signer": "0xd1CdfC852326b8427841805E9aA02D39705c750c",
    "userId": "201996771"
  }
}