{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x7299f94bba6f9aaec257b34b09886d393ef9533f8e469e53ae0e03b58215144b",
    "signature": "0x79e72e9843777b99d7231b5264a185faaa665fa2e873b2ba8a43d8d6375f8aea4f7bee35074c6e7e3d2d86d407718a928e1d57c138422b8dc8472e1e3475168d1b",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}