{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "952867536",
    "entityType": "User",
    "nonce": "0x7ad6516068947db871273b8c4948576ef5fae407bee416ff0a5999df2bf0aacf",
    "signature": "0xddf79ec5503f6e5173004dd9718ef141314e5d8cc57e5ee04fbe3d2d1c3a75c8416c3f66ea83bf5fa679fc13c644ec8423698fcd5203aa80bb797b5f6ad8b70d1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}