{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42340",
    "entityType": "User",
    "nonce": "0x7c19663c080c10f4779a6fbff7ae45b169addafc9c5cf391b2f774f8e5fe27b3",
    "signature": "0xefd925d01c43a3809b91186c0d5ed3a52cb648249c4488fc6c555dfca39771472168582fe0490811423a278956d5b5b832a699e8a195737a1b1c9fa3e86cf0e61b",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}