{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7500",
    "entityType": "User",
    "nonce": "0x9bd327fc94ac28f411a28fc90f32b44569157f5e8a95df3b9e4f211d5046376b",
    "signature": "0x302daa8add97c04ff106572429be6664e1edce41ce85b3c22a1eb980d583914b67467bb9cb84b05d5b2cbfd94bf8671cfb9ed4fef58bbbb91c7bc0f9f19de1d01c",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}