{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7599801c07f35b4eaab38dae95aa61ede3511b71a5d4e7b98f2ab92a65505ea2",
    "signature": "0x20caa8a4bdc598149c7b2b1ed123f7642a999ac0de207a732d5e92c415f4694712090214098d88a0d6c2c896681aec2a47d8c5ffce147866582de2169952c4141b",
    "signer": "0xb753089be1A1e3fac594a13e9CF5f74f9939017E",
    "userId": "96526378"
  }
}