{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338282108",
    "entityType": "User",
    "nonce": "0x2eb24169fe6652dd44f94b5d7c4fd0958fc3daa606bc538d07a94a443a23b478",
    "signature": "0x995712b5de14702271bdb6b19fc128c75cd84fa0717682003d78eaa1c7043b5a7d7f08ed7b8652bc29d044665b16400a567dd845ba5ef8e5e5907ba2fdd053b81c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}