{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "757330489",
    "entityType": "User",
    "nonce": "0x4f952243e09443cd3de2444e7ebd0cd241aadf45cfd922ab1ad0e4b842d5dca2",
    "signature": "0x2583db8c594be0b1d35f17aa39f3008416914300db2a735d60ac100095b3edc829e8b69bc50f8a744b487cfbfbdbfa042f2bf068c60ee62c44a478f588a003021b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}