{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd8eddc0c7ff1c24c27511ec2ab5fbd55fe73599c9f8e496cf3c7dc168c0a9eed",
    "signature": "0x6dec7c78e5790d99cbc7880d0d41b147cffbbb788bafc6f5b0d4d47dccb1197107a2f329af28e6cdc48c3dd18d5cb9dd397270b6d07d7e11e3d809ccb04cb76b1c",
    "signer": "0x2fe974Fa703E3bD5c3Ee3410C492fF0324F1F84e",
    "userId": "869013110"
  }
}