{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x0d3ee330f830162471f18a1460cf0d8d68567a6a94c50fc9232a0e81cd17e7a4",
    "signature": "0x76a65f44b730fa484ea2d5b3044940ae0fa40902480e02bf534395b93260dec671bc945ac80cac686c3bfce9e3ee3f74d7ee6f86c64c580dc75c905a6ad2999b1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}