{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387358",
    "entityType": "User",
    "nonce": "0x4d8ec34b320a522c4e313877905ee2d75a486e69a14358ecb43d0ad4a60e63e2",
    "signature": "0xc2eb07e914c7b59b0179ce2e6c3709af0ceff0ac7d509fe96ea1fab90c155d8a65185175a0290b4780ed337133aefdfb955305f226dacee187409c728225ee7d1b",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}