{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9290340ba1022d968be057ed917f0f9754ec8ede5b44aa537e78aa390f281ab1",
    "signature": "0x675c633240ff3bf7eebcde04fec692323ef9c862a2452da475a084825780621d1dd6bea9814f85bbee7930148247a82705d2338a21fcef3853c09d8a531708dd1b",
    "signer": "0x25dde621D9aB6Ae08aFb87443d38885ec2224Ad0",
    "userId": "948891709"
  }
}