{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x6b8cc16d15d61744f5546756f157bc677915e50a893af5b1317d4c028f839b1b",
    "signature": "0xef4430516b1d6bb1b02e003cc97ac6edd61adcaad47616b312f8aa9791ae55d341b38bc46e52763b79b6f7c469eed304469687052ae36c2c3532acb3995184a61c",
    "signer": "0x8A7ef0AfA3C20823CA2525BE46EC0010EBE7609a",
    "userId": "990507503"
  }
}