{
  "manageEntity": {
    "action": "Save",
    "entityId": "1165924413",
    "entityType": "Track",
    "nonce": "0x197d029dd9fb4653d5ed44e2b6a89ee89f2dbb9579aa3c3efa71c4daf519fe18",
    "signature": "0x2bb3d52933b3c39f315d74643c7c35884e971132a5a96a84afc97d1f1905d7827720a0959ca2dc4285808be72c9c17fc37b3799326705709f22f56246398a2fe1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}