{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771602835",
    "entityType": "User",
    "nonce": "0x5c039635aadb2612aed407926e5ff2607ae73e8292a6ef8da1590276d54d48fa",
    "signature": "0x0bc87350f8b6855eac42057368a97fda70f9e44d6043b7c4204e9a892aba769543f19ee667b11d96cb8090890fc4e24e19b37d29164d8d4f434a7a841ac2e7be1b",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}