{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1887472",
    "entityType": "User",
    "nonce": "0xdc983066103442610a56df57ee24ef912c2690e6c86ac4503a53d3d01246ab22",
    "signature": "0x619b492382c2a511df745efa74d22e8c9953d09790166f0ada92c386b9c78f3362d5b47c48dc1eb2f2636cdc2406a51bce83c7a440ea2c2dfa1d0f3200480c881c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}