{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe5be4a86e68fd3b701177cadf801534d1e680b14fe7ef4510e354b9164652bb8",
    "signature": "0x6b2467ed7faa6454ac5491d8137fa31d9ed044cb423ffe9f1e0c916dbef13bcd50992c5b149b8204da51e8dfbebc197bbc93327e65bc9268c448ca037d9e95ca1b",
    "signer": "0x0590b47ce87A309D43795B76d4B2740d975f3596",
    "userId": "336202603"
  }
}