{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301405",
    "entityType": "User",
    "nonce": "0x27dfdea8dcfcedc2d2b1ca938284f8e5e65c85de4a59e9f538c6d9004819fed5",
    "signature": "0x3f37a9d07d55370a83f6c970bfc03ff466e1a48efe7dd42a2901837ba5e80eb4180de21d79c34fab3899761e07fad2cf3b9cc57f076076f9a7e2c3e5834c554b1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}