{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "770725415",
    "entityType": "User",
    "nonce": "0x2139dd734cfbe4c59d71a68fb5771aa85765a449baf4b3ede22fa7406ec8d35b",
    "signature": "0x71dd82b1d83bdb730d725b63f0c217c280117978f36adc34719f8663a29b552041348e9c1374e8798ebd901d8037143e874595bf261fd43dc97a7bddd9979d921c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}