{
  "manageEntity": {
    "action": "Save",
    "entityId": "1210033479",
    "entityType": "Track",
    "nonce": "0xb0751a874b7840c78c5d7918723d1b872934d0d1551a10c1315200b4847cbc86",
    "signature": "0x25530de13fdd80ffa5633cff09871dd585f6d7fc7959678c99e2bc9a30bf37f478c084b7222b9496cc62229afd67106e7cca8bb00c342769cf75162daabf16621c",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}