{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0xc7dfdd20237f48160c9149e6ce3214283ea3a98034637753cad8152b746080d1",
    "signature": "0xd5ae09115071db0b45bad40f3326ecc52be6380e720b820a86d7a10ac38fd0995f081622a8bd02abe55e70dce143f3663205a846c9e2e941eaf5c52916ee307f1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}