{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x5dbd0567669d1db0c1543f4eef2928558c0c41f27a5dd9deccf6fdf3e109245a",
    "signature": "0xf4d52bc53b88c22d6a1fb602f547796300951651859b51baff56047bc3818426334d1ce48decfac6cea2f8a81c3d473b968b22681052bf8ab6a7b2af89c3ecab1b",
    "signer": "0xdA4448A94942BB1d74B134dAe4e71F0A65E8a180",
    "userId": "669480134"
  }
}