{
  "manageEntity": {
    "action": "Save",
    "entityId": "37291",
    "entityType": "Track",
    "nonce": "0x244a601f8326237d3de4ed918df227d9ef27556ffa9e01197d404bcb2f680b15",
    "signature": "0x676d5bc79e35a1dee046f3a1eb6124d5d315c25c5ae7065980a09ee5d0c6c181382d37baf2b300844daf136717dd7bfc7ea16250fb4be44482b65c4001bb96a21b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}