{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0xd865357d02f8496b66733587e8d9bc046ab48f1144776de2803ada96efd22a98",
    "signature": "0x445660f59fb252983e5e920d9b9cafb9ee715623102defd0414f7b6d8c6ae5aa4f3c03afdf83cde978996ba9b6333323dcd57d148e09261a857e0bda7150e0221c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}