{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x628a5f6e152b445503115d5847cd4851cc39a9d80234e3c9b5d4cecb6931abe9",
    "signature": "0x68cf31485412b7cdec5d6be992b61728706cf15d662c001e8a4dd477346be7b702c93e9d3653fd561606cea0ee3239d71b11d4e234c7660a1c960d912429be9c1b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}