{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059035220",
    "entityType": "Track",
    "nonce": "0x122c8bc211a9aa387bcd9fd44b4e72f334d9cb9a5745945e78c5ed454d677ff6",
    "signature": "0xd5e8edce85bf72ce9bc2653a0cbef5786702276999efef2a73396cb20b397b2b4d1e4746c95614eed7181e1a5c6ca9abb4dd8177cd8614c4eae4e7041830fa4f1c",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}