{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x608b25459cc35699373753893d9380ae1389417be32d2b5c91718658c4f68da9",
    "signature": "0xbc4f13d5ee955fca93234825e28f782d63a6563f7553030e70b03ee8430008b00ad76ecf4ebf5bddcbc26493c17fe73cbf2a51153211c22f43e87276e8d69c941b",
    "signer": "0xa1962F596d0c21815F786Be31Cce30330233Cd5a",
    "userId": "653470626"
  }
}