{
  "manageEntity": {
    "action": "Save",
    "entityId": "1685569940",
    "entityType": "Track",
    "nonce": "0x327697cca71c1cbbe863f372fbd51df87905663ad12a56ccbb9717bd57b2ae25",
    "signature": "0x3581f410788c4e71306c8fc0babd5c3aaedb38654a45e79b098954c1e7d703c84087ca7f4f7e4460e6a23eb3688bdc40a20e11019b517b9e7ea8c09b15f030f61c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}