{
  "manageEntity": {
    "action": "Save",
    "entityId": "86277668",
    "entityType": "Track",
    "nonce": "1792344670786358428",
    "signature": "0x6f443a3ab2cc9b909abb089c0b3186c5634df112c681b5441e2248211c6ea3d6560c59055f4a746be4b56bc9e9f97a3d4402515bc03ca6ef30c30fabb43187dc1c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}