{
  "manageEntity": {
    "action": "Save",
    "entityId": "2131180828",
    "entityType": "Track",
    "nonce": "0xe005681879dca44698a57989a6ac0caad066dccfcf2341e4abc79c06d8161fa5",
    "signature": "0x64144910d3db0265ef84cbd2d77a31bc453fe67c82c12b42320591b5eca004104389f858df8e36a0224a78418129e7a5b170e029edfcef1a18de45f53141a8b91c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}