{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xa98fe9c7491b5177fdce39a44dc97617173f39f82f1e24271a73f91a6ba0539c",
    "signature": "0xf6106bbadc42ed383055019bd6fec2c6295e319e4136f5cb80c5bbb12fb854341f5e693677cda0f8d605cb72c1e4226c75842f62fda4971874db654af4afc34e1c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}