{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "723085841",
    "entityType": "User",
    "nonce": "0x07b54105c35060746044a55a2888c5205d657399358fbbb1763ebf76dafab8ad",
    "signature": "0x8bd0ea56f0307f7a907a19a9b3cc046b98ab3eceb85036221b753f26d9726c6a53835d52cff0168f31555229316c5e577b6bdb7c2582b4dbd6be8734eaff6ec21c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}