{
  "manageEntity": {
    "action": "Save",
    "entityId": "93763447",
    "entityType": "Track",
    "nonce": "0x6d7e08e1d68e01a2a7318b8a0087587458db16bc6389f15cd45e15a9ac38f2b7",
    "signature": "0x65a7c31c02ef3dead4d5b7809abad4ec434835325254a48d11bf4763c1420a9e0248c0b7e0d6faf2ac8ff4fe8f2f40e686e611d4885e09299749f1add982bb401c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}