{
  "manageEntity": {
    "action": "Save",
    "entityId": "97208226",
    "entityType": "Track",
    "nonce": "0x63a729f30f5bba7fdbd80eac8c986bc563e5382d3a88559779d7eba70483e8c8",
    "signature": "0x6deac1eb84298ee185970703d3bb7bbf04cd27fda7f2cd44705a9f48331c2b740576102449d1f0ac964a53b97ad6f2d91f4914ed71b1d5ab00952aca722dac0c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}