{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "22144600",
    "entityType": "User",
    "nonce": "0x1d0828f9fc1be2b16e43c76661ee5b6e2ea5a6bff0a4fad57a54cec0162072ac",
    "signature": "0x08e90093840b8daa6bae5cf53342a864113ad373e24f3841f5996e21a9adcade5d41260dad49916c9802db0ce870b19129ff0e03b0d9e521a4042f00304080451b",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}