{
  "manageEntity": {
    "action": "Save",
    "entityId": "1393196847",
    "entityType": "Track",
    "nonce": "0x5e9128a5d9b12c6907e9d9c138e3f057875c2160519d53f6eef78ceb0ba86403",
    "signature": "0x6d4efe3a2d5c6bb9e6fac09fbee85211f174263e2e0fcfbe0d01c1834707fc66519ae784f0ad56d8fa5d9687a1932af7888d7b9937368909ab457451579ea2c41c",
    "signer": "0xc732abD40749026D35a8f4162a803dAAf665371e",
    "userId": "496394700"
  }
}