{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390576",
    "entityType": "User",
    "nonce": "0x1761f32d7a6cacaca05e74eef22754381f1754ed3b09d8ef680ec0a5031fa5bb",
    "signature": "0xc0686652bc42c256f773d6fafa686985e5af6637ef912c59f92f4fd81f8472397f27ec8d19335733ec601195c09f1a47f61f34491163eeb5ee00222016909b4d1c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}