{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x82185f435913cb249d63b7955b378f329bb5d61ec360d6a05c0f2c54bb523ebb",
    "signature": "0xb0f339a4b4b8f0d6d5b942f91fb564aba1462888a05c07f1e36dfef6858ea2f23ce135c57ff6cf8bd3aea1cc9c9937d37d7ef4cde74bd8abce576aa32dc44fc21b",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}