{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754997",
    "entityType": "User",
    "nonce": "0x5556fbbc10b722c0b59f561508563928562ac5c1dc17d4c2658863c51c26dd0b",
    "signature": "0x4bb869802dc9ced51e6b86bb431b23583ed4b21cc0622b2889e7f4a218e2752675999c1d3d22a2831a2da6b6fbc8f8252f1b69fd26aae56327678a998a504f211b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}