{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72fd076d2716be30c7249c92352776a47e39dd86941776de5d8a2b50a27c00d2",
    "signature": "0xfec78c4187783812b85874ec2dc2f96edaa89fd779d3b8ca035dbd346f8747207f566becbdc7173fa5231a182c80a77616f24fb88b3cfd055194277cc382d41e1b",
    "signer": "0x429460374e33f10e8a227713a7d240bFd681a266",
    "userId": "742035512"
  }
}