{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "414331043",
    "entityType": "User",
    "nonce": "0x9cdeca6722d42c974036b9703f095e639425984509bb9224c6a50c8b3b84e46e",
    "signature": "0xe2b5617a5df239e4b52287317c3f4efdf999b9dcb3e4cfd5f0055d13159e07a271a476989adca8a9d35738fc65f5ac85c5c98211b4f2274d7af5312b0da05e091b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}