{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xec39817d6c397edce885bbc50c6b45bcfe5d6b13776df8ac3987b73e400d479c",
    "signature": "0xaefa451294643606df6e01a8c9e96b2161633f8c10b94015ef4e62dc77393129515fa339b1bbb8bab4fec17f0a6044c24dee30e1e52fecab47cbc0d5b84e68371b",
    "signer": "0x64EE74012185c8814FEd0413566875D29A83eB96",
    "userId": "76836106"
  }
}