{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0xbb5d7fa51807bf712e8c5c6be356dc13aff476e83db6dc946b58e7ee83cc6aad",
    "signature": "0x31d0c924430b402309875134013adb59dee4953c05bff5775bab064046f4e2fd361870d9b9910fd64c91e4d78a45a9fd4a0d7e7443e969b6bb639aa170b3ef431b",
    "signer": "0x70b7c172C22ca6f528F9B205cff3E32D9D6cE7dC",
    "userId": "396607"
  }
}