{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0xd39b85788477086e7bf5d9a2e33db48992b478d7f9cc3a1df6477e5f93b59f1d",
    "signature": "0x7a109b6e08a9e18ce99c22adb5d6b3e2c0a58f3dd3edc65998f33103503d7ab62dfaf0b49e74602bb847e0bcb1539420deb025441c103c769beb8181bc8af27a1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}