{
  "manageEntity": {
    "action": "Save",
    "entityId": "1753819879",
    "entityType": "Track",
    "nonce": "0x96f97fd62255ebcce6157dd4915a4cc989c2f9801b0607064b897c1637f7ee6e",
    "signature": "0x8d9fe7c7136c6b7aefa27f6fcb69a4243e0b28f7059c5e1191e35244413e5ae66cf5f13202ad82461571cab17a22d6a37831892aa7789dbed4aca2c05bed44f11c",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}