{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1550",
    "entityType": "User",
    "nonce": "0x8100d6fb32410cb2050f11c4e7a308490814e6ec569e63dbf08bbd16a3084a1f",
    "signature": "0x317cbece76f1c02f6c6d212a24daf28a81c95f3f6a7c1f7de7833d0f1f694d093822a54b7a8e5707429d4974dcd0e64c53bfc4508a31d57b043250bd46822a501c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}