{
  "manageEntity": {
    "action": "Save",
    "entityId": "1034411552",
    "entityType": "Track",
    "nonce": "0x04b875a42f7b27f8a95f5a1331ed7fb718f275e37cfe3be7914c94674bb3549a",
    "signature": "0xf124409393732af4f219442b2d0c7892eda9fb12c73ff4879c2c27774cea71023327328bf2b8533c39e8bde38264c09a4b76deb8979e2629e0e8f13167c0e2a91b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}