{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x190a5af4705fe07909d400e0f14f7fa09ccb586175067137f887fce9d9dfda70",
    "signature": "0x68e0793c755b0c1136c2730eba3ce25802e456fcd287f46aba1a9f38e33cdbc537757955cf1a6063b31bbeac6342dffdb093dea6558deafee50a7ec9fc2c4e391c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}