{
  "manageEntity": {
    "action": "Save",
    "entityId": "1613163187",
    "entityType": "Track",
    "nonce": "0x3551383f783939f8c1e0f088d392fb9a24939ddd2dd00bd3b2aad5e91764f3f4",
    "signature": "0x26bf6b174325fb0577b43e8d149444cc15c1954bdd78c538aa4ffbf79e98854c0a039040a7148ee88a8ddf6c0d173ab9172a2e5283394f119594f9541f4e3e411b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}