{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xaa7c484d775c6b5ff8b161ff9706d32e720e2175545daf7fe0db5b52463f05a0",
    "signature": "0xa278734e91e5f2cd0aef8be41f8829863a9899786a3c3870d36f8d1864f14e3b46492e63d54a929e3c08b413ffc4b9ebd480d633284408a7f4c46096b9da700a1c",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}