{
  "manageEntity": {
    "action": "Save",
    "entityId": "996794741",
    "entityType": "Track",
    "nonce": "0xf3618e75027c7ef13c720e92d0d86470b3adbc2d81a0fd985d5d48a924d64e1b",
    "signature": "0x683de9466d248e3716246a95ac14faea47c0a94eb9e754a6845d359422568c1e4e1282893cfa53b1634b0df3494b3aa6b805ab882a4794398f23842b3315c2bb1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}