{
  "manageEntity": {
    "action": "Update",
    "entityId": "164213280",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x89a99703c0a31489a9bb6e99807dcdfca7d81486d9147dd8feda7e0124b17bc2",
    "signature": "0x36c14522c24186b23595c71d4af5879d65f58e0b95c695ae68d0564cdab7afad3a386796698843d187cc909cb908c7466dec408165dd8d9b88e7074da49130641c",
    "signer": "0x20132B5b04f90b6ac3f1DB5e2A5D220b53498beb",
    "userId": "164213280"
  }
}