{
  "manageEntity": {
    "action": "Save",
    "entityId": "2095815940",
    "entityType": "Track",
    "nonce": "0x7cbf75f3c9d7caa6dc4916e3e281c194214100ae655718f0cfd6e23fe864f7d6",
    "signature": "0xd87b01f63698d7d1ad273da2a34ae3c899664b73a91911e7f6744a79569f34341256bda593ab9cbedbd8c04a3fbfc35fe06f840fd04866c5a2fb53dd8b786f8f1b",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}