{
  "manageEntity": {
    "action": "Save",
    "entityId": "797695755",
    "entityType": "Track",
    "nonce": "0xbba3f207e214dba7da0c5606ae5b5d09e0e8a5f1d80207fe8668741dc0727c2a",
    "signature": "0xa68782231bbd3adaa29e99dc40021af256a10881d94e31bd47fbf40e5efbadb50270b2bbed27f5dac1ecbca90b315f48af0e8b2eda0b00947860b93aa0ab9b481b",
    "signer": "0x767f09338Ac6CE8645c0a76a17a560429b582132",
    "userId": "520958130"
  }
}