{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214443",
    "entityType": "User",
    "nonce": "0xfaa595f5ef590f1320e4846be2f9506158219e2ee732a7d318c654010893fb96",
    "signature": "0xdc699ae0a77229e3606222cb5b797f4f89da10d017df64cea8b2e3b946d28d6e7331b6f11e2f8a993b28f7cfdc512488276c0a562da3790d1a5a8739ae9a616c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}