{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "910778788",
    "entityType": "User",
    "nonce": "0x6d42d327320716fbc4c0bc32c78b0e2313488c7fb27dcf34a729050b1c5194bd",
    "signature": "0x8d47b80f475d873499af5cb90014ea1f7c2afb65cd2ee12ec7e4f0f0b2ab2c7a634b0ae57f6e4ab667ba6bc3dcee04e8a3216619dbad6ba4e2afbd8ed35344391c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}