{
  "manageEntity": {
    "action": "Save",
    "entityId": "894016916",
    "entityType": "Track",
    "nonce": "0x58d292ec77e479cb0502ab18876631143cba5f9acd2a927c9ca23302d847565f",
    "signature": "0x48b1431cae8d29f78943ddf4484ce02a2b16379a2843c4ad4b4c249a917a1c4c3533abe9653da4eb13c13bd795cc1f28d5c6c200dae62118a23d18ac4df122701b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}