{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6200",
    "entityType": "User",
    "nonce": "0xd9fe67c81157823d3bf4de69e8688665534dac42aaae776fd997c3d43fa1f30f",
    "signature": "0x2828c29d281649c3f02c6b292bc891660f1885ca3cd614321698143546f846441ab625b32c3049a3c632373066dd2048b3fc8e9be2785d3ae1507a6289b625cb1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}