{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172303",
    "entityType": "User",
    "nonce": "0x2ce627b8d74f63e2feec859dad289653bc65bea2a5e60fa0595702fbb4413ab6",
    "signature": "0x8513ca4188d5288ee6f0b9ecf5ad4999db5adc4a15f4cd163550be1bed85cd707dabdd70aa3cefc8dda1d452451b4ccfd359e9228f9ce8c647306046e68601e21c",
    "signer": "0xC57e1cBf8414af8d043075F299b2f13C3DaA1Cbc",
    "userId": "869267771"
  }
}