{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51398",
    "entityType": "User",
    "nonce": "0xb55c3538de9f6e0dbbf55694fa2e9463a96da8bccc2f5141df19cae68055b058",
    "signature": "0x2cfbfb356e8ca8667594d6afcd676be6def474960adb28b885522de78ad961544edd23d6453096d02c7f308b638efa41418f95f6121ecb9b3449c2459d5796cc1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}