{
  "manageEntity": {
    "action": "Save",
    "entityId": "2130762820",
    "entityType": "Track",
    "nonce": "0x14ac16d4474e191d55a55f1768c3d06640f1e07f30c9036c16b15185fab5007c",
    "signature": "0xf70a9e238261b5e359cfd8fafd2793e1c8158e1c4739aa4ebcbab3f7e1a445704f31f5bc7e612365091ee3324073e56a5c0264058b57c86082d2775d0a80fd221b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "175162"
  }
}