{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x03f38dc26d3b29f6fb3d86529c487c81d7f10f38c132a02ced34d5f108f926a1",
    "signature": "0x4df3d027c84268cfeaaef05c3a38d30e7b69df4eb86bbbcead701e930b245f143386f25a80bffbcf7021b3d417bf596c1fa216e456b62b1492aea532c333e5091c",
    "signer": "0xf0FB6Ee8Ad56eA2e147d118ecaa4eB46cf03b448",
    "userId": "831640099"
  }
}