{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xbd8a23717cc74caad6c8e8069be09b1c70c8d18573a94ac87c6895abcbebf521",
    "signature": "0xf3e3f5b358c9670acfc34f19f479dde2d7f216158940f14ef9fee44b9048b57b14d44ff4a7cbeabaf7ef73b481796d136d3609ebee597cf195c0b36e38065cc91b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}