{
  "manageEntity": {
    "action": "Save",
    "entityId": "562080795",
    "entityType": "Track",
    "nonce": "0xc36b3a8a09cad9c673e103750801892c322ba724cb13dc732834e6ef54548969",
    "signature": "0xb7a328246bf6d7a3c447950fbc3f112e2328d725ba573ee8dca493b797b2ee2a52aae71a48a4a9dce7f2428e04e6ca6f4cda15b9a2b1c364bc885aaa99e685871c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}