{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "572020046",
    "entityType": "User",
    "nonce": "0xa043a6ad2dbf09d9ebd5d85add6b59200e459b995db9e9b0307835115b791d46",
    "signature": "0xad34ee22fe3f5f58946ea32b401fb16c02af295e895169db7dcb3bbc1e38976f1355aa320ee8906551d1d0614be8a0f0f759c1956c50f32d9f8db6f9f76eb8c61c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}