{
  "manageEntity": {
    "action": "Save",
    "entityId": "711774415",
    "entityType": "Track",
    "nonce": "0xbe6000da2e165a177a13373fac9dc75f60e4d8fdb6501eaa92e0cfeef75da7b2",
    "signature": "0x41e5547b76e0b483a31e81b645883333b88e01f202d0fafd097af8cded817d1e0a2d585212627408427cd438d942e4f70c6a9a1cd3de440da517da9bf02178ca1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}