{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "570740739",
    "entityType": "User",
    "nonce": "0xfce38d21e7b5dd2cee45eecb3ce75350877587a13d1b3ea4c0f054033bf3aabc",
    "signature": "0x6edcd1fee2e4aafcb7ce9db0294afb0d4610ed44ea3802436a094d21710ca07016db110bd5211c73cd9305e58ba26f1df345c52435c72f5bafc6593d2bf88a1f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}