{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0x4acc0779f8bcf627647446a9f7be7943224a63a6e729a3a943e8810c294b3a65",
    "signature": "0x8090565c71b86d545a56d45dbd5313f2a0b24f8cf18ab44a271ddc7e7029a025216e6232ab282ca3ecf120157d8f22795f81ecc5b3f441a4c413552bc79ce99d1b",
    "signer": "0x3B13b5370f9Abe46b4FAF607242E5bf602E2c8C4",
    "userId": "195900597"
  }
}