{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0x902b43e65e2efe19c100ce702d7c4ef8a02ea8876f86d8273f703db678c5b7b7",
    "signature": "0x8989757d87514ec1d6ff9e34837c5319877f5d090a9255cef1fdf8ae8b85207211ffbe64efc71aa4bff0ecaaed99399d191f80575ea88d3d91a991552e6bb0a41c",
    "signer": "0x03803b915E0AAee5C2c5aA3510FCc5b4DBb0FF46",
    "userId": "629975650"
  }
}