{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc09a3d2e6861b2a0fa5268ff6c4834922f61891a9c3f51fb62a0d6e715996b0d",
    "signature": "0x030b5d8f92290d3c4566ee5b9c62cd54aae2ab586863cae9d11fc406888258587b93c7742e2fd033031190ab05cd39640e3360746a4f1475e04d5164031980281b",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}