{
  "manageEntity": {
    "action": "Save",
    "entityId": "24419040",
    "entityType": "Track",
    "nonce": "0x2b7bff8118dee0d8e815155018560390ad6cc6b854610295431dc6deccb950c3",
    "signature": "0x83c4b2ea67a68c48c0e9ae23d4a9000179d76b4e57d5b6af6f0083e125832983508030e595bbf1155a81569941e3845c1d77673ba24355204c585ebc8621f4661c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}