{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "763473",
    "entityType": "User",
    "nonce": "0x40d580f811e0e408f2ca08cb545c533939b322efd26d314305522a49fc5c1bf9",
    "signature": "0xb01157f64b686d96fc629476bca8f06aa4ccbd7cc23b71232644ed22043f90ad382b8c953187f1d6332e0b42d1662969279e155bb0eb1519540f6940a7ed8d6e1b",
    "signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
    "userId": "161438318"
  }
}