{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145242",
    "entityType": "User",
    "nonce": "0x67887feaafba45b7d577a4028d5c680330c91bccd4be7ae54bb0b7738100c737",
    "signature": "0x6166e646d80e12bc78d8cb11294e6e244cc602ab66fe4797f00b4e73ee03e13728fb6ac22ef85299f333c9d0fb555b859244ea0e4beae89246ee5161c97864911b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}