{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309242061",
    "entityType": "User",
    "nonce": "0xd6f621bfe83856bddcc6a2d1c29f7202e2e0d9bf18f8cd4559f4338a910ea966",
    "signature": "0x9dcdbf092d1ca507bbadd6bd052b8a74fa1bc2a96ab296707520180565ee3c937d2dca7c49caf2f8847abaa2526afe78a5029c465c1dbf299f388021363e7b671b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}