{
  "manageEntity": {
    "action": "Update",
    "entityId": "831561034",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x15c7ca2a1224420af86ecc5c695ed8a4803208e9d747ff35d97cc1ff0497cf09",
    "signature": "0xf5bce64bd18dbfe55f13ef3442630d207e6b06a92a979222688f701cc13a42326aa67d170765ceefb9049a3465f59de747360a83a03ff617a4de4cfaa8e7fde51c",
    "signer": "0xb98ef2f3573a0B0E83004f1C3b8B2288EAE90B8F",
    "userId": "831561034"
  }
}