{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0x6d7f0456950af26f8d700e0138bc204ce09ed9b5ffbf8bd582ac2bd94ee53800",
    "signature": "0x568307ef3ef46cce1d7f11326d139f02f4b9e08899c9d1381313d62ceb6e4e5d64578e48e36c833f69813757f0a54e96aa5b3a6acbdb896833a64b3f6f2e24fb1c",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}