{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2559",
    "entityType": "User",
    "nonce": "0x36a04bfefe4d80ea62da7984d3b5f46c69c7d43e6c1bcd0e0017201b612d7fed",
    "signature": "0x971fcf26952205afd1700370a16f1108640e766fb87525eefb44b602d92c3a49299a55779154eab73c83a48b5d63b5fa08e333812452043fecdafe1399e45f451b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}