{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1334982",
    "entityType": "User",
    "nonce": "0x982023ed83ac7de3e6c4c2a608ce53adb9601bab4be73ac4612744ad01def923",
    "signature": "0x392892fce9e657b2529b92c2656f4fd6029e0e544be82ced7067307098a3eb8866b259bbd6b22946bfa9f1efdc363f6a7b237f189ee710a0b365816c196b0a5d1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}