{
  "manageEntity": {
    "action": "Save",
    "entityId": "1096142940",
    "entityType": "Track",
    "nonce": "0x54c5d8459131b78451f31ef1112f3ec8a322c2400f9616d5c88faf4df40babc3",
    "signature": "0xc3720b2e39f06b8800dd72670ffe27c6ab09f66fbb952031681225f7ad1d480f1e12a8126b79740abf1fef7add869b862975b4638cf4842063638bfb1e5023181b",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}