{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0xa2f0b92ada6432714874b29e7c796b8edffbcb410909d772cf424f542b5abcfe",
    "signature": "0xca18ecc65c111fd8d996e8938a67d657515d1c92c2a7a57a8ab29f60c7b0e1376baf7500f7c47cd63d1f901b69982cf13e688d78b94faba50155e1286f0cdcf01b",
    "signer": "0xecA7bE0D674f57B97429d26772Ff18f70c1D99B0",
    "userId": "418540520"
  }
}