{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xc8096ccba4cbdb132ea69462d9a110423d473b571a17a0bd17659381d0774089",
    "signature": "0xf0634cbbab0a14b28c01162c040a830b46968155823c21765d587f0099716522408f16852f59f5394ab179817981015c063e03da1b5f055f2e11d40d26dfabda1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}