{
  "manageEntity": {
    "action": "Save",
    "entityId": "53940255",
    "entityType": "Track",
    "nonce": "0x6e58f1322bc55fa274ba838edefae4fea564cbc0f15e21c0275d1f2946fb4930",
    "signature": "0xea5cfaa5ab3bd8884e4a87ecea188d4b4ab8827318af2cff6be875b41c7778bb33ec245c27c3e3e11f99f9ff24e2786a85453037f2da41e01046bf26e69960e61b",
    "signer": "0xEeea4f65FD2D7EffBC68176EAbe8544B088Aed57",
    "userId": "584616263"
  }
}