{
  "manageEntity": {
    "action": "Save",
    "entityId": "106587",
    "entityType": "Track",
    "nonce": "0x69536ba757f380043ecd6f634d404a70529594e15d7ffc9381922208c35432b2",
    "signature": "0xa872de8682e18849fa00d66ea8176cf0549353cc489ae409d5b50c8695c11d7457ecc0f4d74d012395165bc79eeff1675cd30c7488ad5a4223c2494c74e6bac21c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}