{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318436713",
    "entityType": "User",
    "nonce": "0x49eb67d3bf27dbbafc44fa38d64bc2a549d99ddeca26694dac790dbd8749c6d3",
    "signature": "0x92ee99b3e72dd5c48dcbbec9a946487fa2066b8941b9674420bf0f659a20dd271d62b61cc9e995c3d7dfafab4b49b90a354c1b616710c0eb7353386ff292fe271b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}