{
  "manageEntity": {
    "action": "Save",
    "entityId": "951979586",
    "entityType": "Track",
    "nonce": "0xed60f0551048fe029aef4e899f07e32e53f56465936d041e83f85deb0e7c8380",
    "signature": "0x0aa5f3586b82da3bf4e4a206492e4276323e6dbcb794192cb43bbe079517eeb3166225e57b6f6381891775c3e59eadd755a9ce19a31c7cdcc1f14b215e30eda41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}