{
  "manageEntity": {
    "action": "Save",
    "entityId": "21963822",
    "entityType": "Track",
    "nonce": "0xcd98c1a14e868d546ef0539848b7bda34082e6ee60c93e904fe87650fbcb9527",
    "signature": "0x00fb41837cc905fcc12a7f6c30f9b1d4c9d206ddea011e0dceaa14dcd75328ad1e08f848959d900f7a76aadebe06276851a9564beec6b10fcf4cd614b89ab3f51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}