{
  "manageEntity": {
    "action": "Save",
    "entityId": "7482956",
    "entityType": "Track",
    "nonce": "0xfff4186112ddc5b160487d4721b45e52cedeedbe1bc541d9b244ff2b0059032e",
    "signature": "0x2a00b108cd03e38b111be852bd24098d5b94a63678e3a89e4886a9f516ecbebd5b24aadd3810c0372d1e99f5201b97b31143add6ab3e7e7122bb47afc2ac7d581b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}