{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881242",
    "entityType": "User",
    "nonce": "0x8c46753b8ee8f8d8f690a60f2949dd26306f1711a38771eb1beeda2e492855ae",
    "signature": "0x5bc76f91daf2eb9ccc9b5fd9d37aa68b2a384668aca4bd54cc3159e692e94acf4487821c67dfee7103b0a3b070a2f925c28a7857f1d72f7ee8a2c5e65b234ba11b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}