{
  "manageEntity": {
    "action": "Save",
    "entityId": "1165558612",
    "entityType": "Track",
    "nonce": "0xa125a273955d56f8214b3bb600b48dd75120cd4ef3df3123f13e03ad35523c27",
    "signature": "0x5a2cd200f4c6de115cab30352a45fd75685ef8296e01b5ca2b83386c23c80690025ba15331448129d4ac5c6558184e72c8b26bd357c038089f4a708d8d9886a91c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}