{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752363",
    "entityType": "User",
    "nonce": "0x60364a1aa0eaa9a8f8438764a34de40716e8ea960d739e1fab55dcae17f0a4a7",
    "signature": "0x3b0d9b07ce1a1412e3ab434481329aa08af03888ed687e3300dc0b64d774de4339bc48872790671410c8a2dde6930c83d37f37ea018efd306a475db6c0c309b61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}