{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774209",
    "entityType": "User",
    "nonce": "0x73a8c1f3bacaa90801c88755649bd8122839ae4aacd6ef8a4dc1ee56b62e6964",
    "signature": "0x72253c2d9beff75b1b1c5836ed93be4f0a6dd7430ec32a0293b0b141f8cd546c22e20fc3bce2e088e954c131434e8608b36bfa52abf8f9d485c1ec58a15e85101c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}