{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "982660256",
    "entityType": "User",
    "nonce": "0xa21f46ff75b96458ae78dd2a0c4a99a3400f1c96d166a905fa4827e2ef78504b",
    "signature": "0xac1cae8df2c0a8050c9a6ac32d8a6dd487f112fb730b9b2b97ebe831eb4cc6ca2856ece3c638eec5f20677c57000304da5d8a8aa8d5e3f4b73a6ae6212e7beb41c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}