{
  "manageEntity": {
    "action": "Save",
    "entityId": "801255",
    "entityType": "Track",
    "nonce": "0x2611c93c6f131914d37ddcca0056b2c8c1a65a0c3193eb9d700f17bda5990670",
    "signature": "0x830e6b4e85d933b01437f4f114e561383232677300172a8e34b9441e4d6de6f976249cf4664e856600ca7bfc72972db3ec0d5d661db1eaa4c02d5ab49dec9c3c1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}