{
  "manageEntity": {
    "action": "Save",
    "entityId": "41732614",
    "entityType": "Track",
    "nonce": "0xd7aa85b32a9ea0fe03c510a6ef0ec69482a38874800c7566536ed5120d54987d",
    "signature": "0x589ce9b7101532e288b6de0b0784a6e53bc900ac4f8b0a1d025c44cc6c35efb526ccccced38e2211067491ec4994c0630701c2b6a250119844858bc3e2f40c381b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}