{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "528478879",
    "entityType": "User",
    "nonce": "0x29152c5f9a0c43804b87a2b9530ac5e2dbcdbe703ae2fff86dff181e8e08b744",
    "signature": "0x35eabec308a31022de4c3abe6f915443d7f52d91b43dcf8b231f54ff064ed09c7b3f4c8023520fc4f55128173dcb0aa36db84e231131df34f01f4defe7c47f281c",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}