{
  "manageEntity": {
    "action": "Save",
    "entityId": "1784827159",
    "entityType": "Track",
    "nonce": "0xfb47e114028b1879427df35b80a54b59ef2205cd6e83d6ce70c24960b861d0a3",
    "signature": "0x9d21f5048994c110019a5141b984e80a545f53dcd66410eb89e6e6e2b4016218498cab795cd6c1c009e556094a61fb8abcd8350fe0a157d560a002085f8db0bb1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}