{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x85ec8318cdb216e8b248ee10a902c8e52062ce08c20875567f4f18802c6cb853",
    "signature": "0xee2dddeb51a8a9784c889bcea3663b7c2f9e5347f196c2f67d25f206fb4852ad6f9d704c75725702c93e50c88e3da9116ac254eb6cc1347e28611c9973b31bd81c",
    "signer": "0x8494040f7CA6D76959aA4DB202859d635C23147e",
    "userId": "668388673"
  }
}