{
  "manageEntity": {
    "action": "Save",
    "entityId": "276680491",
    "entityType": "Track",
    "nonce": "0x52f2923541cc280ef94f0fbc364cf98f846c1f27eb15c1d75071aab2fc966c73",
    "signature": "0xe3b2b670d801fa62c028544e2429c205e89cffcfe4069914ded9729e0cd481497412ac3ff59da9f4b3ad78e447aae6665392148befae6cdfcb49018d558ebf3c1b",
    "signer": "0x9461A9b4Cc94c89F432302D00E129a7bF62D2a16",
    "userId": "744301658"
  }
}