{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593684426",
    "entityType": "User",
    "nonce": "0x0a9d5ec1399d0d883483fdf0692856de6ae3467786335a5b58fed4f4e05fc468",
    "signature": "0x302d833d10f3d445e07feee04bb941b3028733076fc5b66cdbdbccdd060b9e5364dc0b9b34c7d7f8120ede6330e2c2186717908328b771fc750b5c420e7dee2c1c",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}