{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "979099455",
    "entityType": "User",
    "nonce": "0x3d978369ac8ea86c67f3a118928cb7249aabc5fd64324389dc974947f222c827",
    "signature": "0x59a5cde8155ec01e1c3565f250dc5e2e94720da8ca1f0e730d30a6a68bbb963850dc55a99c65107a6260d63224dcfbf144a91810cff57cb11a0b3ec6c6fb4b0a1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}