{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306838",
    "entityType": "User",
    "nonce": "0x3cab40e76908c0fbc178425c43ec5bdee984b1388f696b76344ee947292b57c1",
    "signature": "0x48ae7003e8443f873b1ce4ee075352f45a71bf978b4b4091cf2f71e0c2c469d37f71ab3878539e3e227a5d7b7ee885a92ca5f45e11a71cc82b40f837d8bbc8961c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}