{
  "manageEntity": {
    "action": "Save",
    "entityId": "1799472706",
    "entityType": "Track",
    "nonce": "0x45251d0087a9bf6dc56dc075a5a398a869522e5008282dcf33bf98bb894f014f",
    "signature": "0xe0cc774a0f4fea9b923f4a9c1dbf7dd3beb6bee59dc286917cf68cd4be3817ef6d26173feab21fffe461b67907148621ed2de27d71552c1fffa61bc91e0fec421c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}