{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449002461",
    "entityType": "User",
    "nonce": "0x13440c02a810a7f3a72f35835c64e343b4ba19f8150ea1c0bf8f68f313867e14",
    "signature": "0x1649901712ec2bc0bfe1337e65a1bee65d29b489283ba912d3c4089dbaf2bf6f445cdb2fb193fe9e0bf37e1d36df9018c1c6ef76ee4b21ebf0d4b6bbcbe07d881b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}