{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1831198",
    "entityType": "User",
    "nonce": "0xaff599df99496f419910109b38268405b9f3de638fc5619567412e95d049800b",
    "signature": "0x10503d6dc03c31d1b5be103100ebcad15324fdc6681a89a08e1ed745df3456ea79d83d62a2a293b31d5ff8c4c599d64e87e06374057c214f7af2f98725f91d5f1c",
    "signer": "0xb9160bee52F73DAB98D7cB3210d24Be59194CaC4",
    "userId": "319969"
  }
}