{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b0d2c1efb697f4aed5e943eaf18e96b4612c4bc9e6f790422e3c6abbf3822a2",
    "signature": "0xa80a37a526e83ea08fd5f606f62de599f1417839abd782bf08e16469691592520d5df67661d8f66073946fe427d00aadd36a423de25331825bf0aeb0d5a2e3851b",
    "signer": "0x9C70ddD4fEA2D708E0BB0152F360cC29d3aA7E95",
    "userId": "146200944"
  }
}