{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "851436",
    "entityType": "User",
    "nonce": "0x03a02bc6d78598e372572a7eb6d39378a27ef848ef7e967e71865d6bcf656463",
    "signature": "0x1c86406005b2f2648c32c82da9f7034955d4ccf185649325f228ac2f03b2d2ad4897708dec5f59414c2f76f6b9e69ddc6fc57481c614ae6077d725a572f245df1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}