{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18281",
    "entityType": "User",
    "nonce": "0x4c995a7a5a960177bf9afbb54af72a0e553f87efdec02cc52fd297cb56df5174",
    "signature": "0xb78ce96a0ebf74c42b0d0e5cae02659d64bc1b5e41b00af70deda7a12349616167ae2b427d5be096aabe5db2dfed9035e540f947b6851f2b0cd76319022e0df01b",
    "signer": "0xc7666bC2c39733fdDAC1b51E6D48C98cCadd0142",
    "userId": "705096688"
  }
}