{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "722217261",
    "entityType": "User",
    "nonce": "0x6d1558f8e690d96cb642eb40424f45bcb170aae77f6bbf3d93451b6839dd99fa",
    "signature": "0x3b61fcdb4ffd8c5c8b3d25afe5e09f85706dea7b7125c3a25e67ea5e099af59276332bdc69c6d42b970e4424792b0b54dcf18e4076ee65a3192aada837e935881c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}