{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75670",
    "entityType": "User",
    "nonce": "0xffb2f23bca1a340df6c002222cffe21214a9da21c476f0267e5a68c3e80148c6",
    "signature": "0x48d01ef9f36f1195b0b3f1dd492c47fed1cf5856f35c3c3e54faeb0de251e77d3f79600af19a2fb365e9003e373f62c95d1c92a6d0139310a1d2bf338f15a6b61b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}