{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa583bc91ddaffdb866e36a252afe86a13cad7faa0eab7d342c4d63c8813d6be1",
    "signature": "0x6fb3c42e069de28bced0e6c863ec89385875232cef977c9959ce2571eea7fbd4302afab8eb99eb07faff526b44a4e21424a62f4b655cbb82818d07bd9918361c1b",
    "signer": "0x857E85371c7c9853684bc531085b1Aedf8183A8d",
    "userId": "729406477"
  }
}