{
  "manageEntity": {
    "action": "Save",
    "entityId": "933856252",
    "entityType": "Track",
    "nonce": "0x9c376edfc148f362ba578ca70637322eb5e44234db014e32ae1415da301e6124",
    "signature": "0x2d537d6547ae765810d40e569987a15d06e3a89c2103e79f57b2999863a2e2df77ffafb9eecadf62847e99a3a55dbb0c25531c42eb859044d71c3c368a8fdab81c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}