{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5930cb5f615ab3625d930e2928a58c98a4ab7d770be29c2c9c02917cf78b5a35",
    "signature": "0x415767da55d7e73c1ef5bdff228aa42f9421387437d23a7e03a417bf5b7bd6c7230c87fc663a10e759d4c9433b7824cd2a42a2c19d9d21fb16d3d586d1c00cda1c",
    "signer": "0x393c8f4ef27d07C48109C752a4617bF5A62d4407",
    "userId": "750444576"
  }
}