{
  "manageEntity": {
    "action": "Save",
    "entityId": "100532996",
    "entityType": "Track",
    "nonce": "0x576f548d0fcf2f9d196c4ca0541848714a54fc542b1025b96a52afc1c1f6b9a9",
    "signature": "0x6837e2dcd63bb267941f63bca94d51cbff6e113220d1143358d8dcf2fab0162b79b73de22e76cf43252528d9cf016ec90679c07aaa46ee1847676216b8d9053f1b",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}