{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd87fd9c8c30ae9a2e3c0fa60191b87c388414b42c6ab02df48bcb8738d96b538",
    "signature": "0xb4cba104616e41cf6236750644a0d48639a87cf6de4ac5d043ce4e3323fd349b7a508ba27ecbfc2492a759245df92183343fc9569255f30bfcc7bfee83157e7c1b",
    "signer": "0x44342008B50D6c8856CC999bCE63B22f99540EEA",
    "userId": "692726075"
  }
}