{
  "manageEntity": {
    "action": "Save",
    "entityId": "2074696455",
    "entityType": "Track",
    "nonce": "0xce5ff6b9bed3cf43715bac8107a123504a8888b743f08924833c73855d4768dc",
    "signature": "0xc6237a00afe949fe30540b763845858745bbf94baca4e356a747485ea8397ca06755e5af0549f4d5c1a9fa4bb7d2b6f5a0440b3f6487683b8c02e482dab01d961b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}