{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77401",
    "entityType": "User",
    "nonce": "0x04a30954a17c1b3208d50d4b200e2aff216f34d286f1f66da21679ef1591257f",
    "signature": "0x73888d97313cef66553feafe0c2808c5e37af0725e1de2bd35d7b9be89683423234c9cae4fa502ebd9d8c07b6ae6b2bc11528a8bab1be2faf852768f2820f2c81c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}