{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "433736335",
    "entityType": "User",
    "nonce": "0xe8f745ed2d693ea3e03ee124fe02bc7173841dcbea9f2642401eaf34d728d7fc",
    "signature": "0x7b8e00ee95ca171825f78a68f8908c5c8168ae1520920493dd3a6d3397dc33ed26f0a9736a82adcf1f8b21ddcbe0a90e46259bfd2384251978ea3f0a013ffd621c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}