{
  "manageEntity": {
    "action": "Save",
    "entityId": "17016364",
    "entityType": "Track",
    "nonce": "0x1eab3ab1409d1fbc6ccb96fc5b2370a7b5801f8cee1ed3daa90757380948cf46",
    "signature": "0x7e42e7efaa87165ddd5b5b41d4caebe2f8f007f662cf7f9786c6eebe2f9270b960cd2e114a73573982f2f1069d55647016d9a10d2c9096e6b43f21ea114e7fcd1c",
    "signer": "0x4Aa8154A33F33394BA8De574d71aC98Ba6A47D5a",
    "userId": "645720561"
  }
}