{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93825ee62a5854a12511e1f827ae1921506bfd662db68c30d2268ebd79979744",
    "signature": "0x4bd6e015588cbb2b4a92b2b72e0190c3731d636b23ec7a753c4063d9ffaf4cc61cf688b788e619ce30c9a8bd5743044b4461f9e4664262bb64e7e838360d24721c",
    "signer": "0x916321C7C72E089041D2Cda150EFbB1EB3BFD4CD",
    "userId": "672132159"
  }
}