{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18534721",
    "entityType": "User",
    "nonce": "0x45f6a5eff4abfcc9773e332a7d896940815dfb3a3b4ac38a7e460f94f620b9ae",
    "signature": "0x518569bb4ffa8c515ef0fc5618a63b745fe117f1743fd2e49d3f69d30bc67f30513de8ece241800753aaf36dc3140fcad8ff55b4820ba46cf338b9b4229ef1191c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}