{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580576096",
    "entityType": "User",
    "nonce": "0x4042f785c9074f7b972950c54c766f265fbaf14bece9177ce4a688b49e120242",
    "signature": "0x59c15541a53083341dcd7d36794107ffe247b93c00ed063f49c4068ce2058be02d66eef7f3ed9a5ebab67ef9697c0298fb5d3861f6db88a2d20c157f12081aee1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}