{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105562689",
    "entityType": "User",
    "nonce": "0x502e1e71f944f8c87e459468fe0e4c603829b6bbb72cee67295bd245e0e02dca",
    "signature": "0x5ef5a61082f4ea93bfdeb9aa7bc9bf57df32c5224d1e31b1e9024a7ea8881dbb052e167b34aeb62332ccd762bafaa345f9fecdf378dd30fff8c96e2c6ed158d11c",
    "signer": "0x3E5E1eDC4E157E0bEbf0EecC8Ec612c26032Bb81",
    "userId": "571586821"
  }
}