{
  "manageEntity": {
    "action": "Save",
    "entityId": "61942",
    "entityType": "Track",
    "nonce": "0x92d7e7a82825f48e8ec1de66d12a0693261d2c7f4b73420a72ee7994f7600015",
    "signature": "0x182c8a6f6f8cbaee0d48593bacc81116fd8772673e917a7582764579245b6f6f7c94209b5471517e7e17d176c71f9dda90452083d685979fa8abf1338e8b4d891c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}