{
  "manageEntity": {
    "action": "Save",
    "entityId": "87889080",
    "entityType": "Track",
    "nonce": "0x68dd7105912023747b9dae110860a908effd7e19c786781c155e212e80fa5e11",
    "signature": "0xde625430cf2de32bf8810cd1bc72545447048572254596f3dea1d82795f395b53157389fe51266ec697d8392caa1f9b46bc00a35fbb9cd55c1d2ce51ab5d31721c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}