{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c29fa6dbbc0b532c4abdbd7f05cac9b383942aafcf5d5b860f4e0f6b6f55b4c",
    "signature": "0xc108b513c5d28ffdbc419d2714f3bacdd8c006e761c968ce9d1ff052e74f853029462531688e88b3583dd8336035a366f5881489b3949f2a2ce8ee2d85f90aad1b",
    "signer": "0xcbEDB845A7521028C6C6EDbaFA5877e26785cda8",
    "userId": "820808530"
  }
}