{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348321",
    "entityType": "User",
    "nonce": "0xeb2ad08afaa64e95da3cc4cfa7c7f9a7f4cfe99779ff1531986dfad077e61b1d",
    "signature": "0x9a3ff6403b8ed277fd6a340520cf6e04bf22d309227d53b5c8395e1508b1074e43f99aa81a541be2f9052f4878d44e5c91dc9d8b079b7ed8de5ed6ccad60a1611b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}