{
  "manageEntity": {
    "action": "Save",
    "entityId": "2122757266",
    "entityType": "Track",
    "nonce": "0xda63e35464a943ccdc4a444cc728e472cace8fec2fc1898e995140c24d73a12b",
    "signature": "0xb753a2b4d22e3b824a2074e2368c0ab15106820f9ba57d586e19ee06deb0835c0ee29403dc3be83da8092dc94c8ad13ad6e0c2a7f457edf4db601687b241768c1c",
    "signer": "0xAf1f176E32866fb97d822F6f5222061aF11ef652",
    "userId": "954117045"
  }
}