{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "915227790",
    "entityType": "User",
    "nonce": "0x3ea6677291beb1faa14ab458353fb11f88e0847f5a7cde2c7306c66ee4242000",
    "signature": "0x78ccf1eb70fe5695ce50ad79ae101ed7f96fbc868307566a3b1b8735077a3d261e585c2f3b8ef12f45573db4e1dcdf5f65c2bb96328f8dc7a90e2e73c2dee2511c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}