{
  "manageEntity": {
    "action": "Save",
    "entityId": "227064953",
    "entityType": "Track",
    "nonce": "0xe6f7896dd83020874e83fd410882f29545e09a1a0d82916330155f9708b6790e",
    "signature": "0x05a007c37bb1157135f3d238afeb0ce5b244c42a79dacb263b1aa251862ed5203a57e77f5ea2abc7b692c73586ca74805a0007e532f361ad4aa23a83e24e69391b",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}