{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x2a949b001a36a005eccccb45ebe5e340812933eb2f9c3e12058d612188d8eabe",
    "signature": "0x18104507bf64b74c04256d8594b1510c7b6228f65b9a5fd9ef99d31daf8fab3d156c5b5a54c96a9d6ad4f807718fa08fcf224bccca59fcc35bfea0bd2fe2fcff1b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}