{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080308196",
    "entityType": "Track",
    "nonce": "0xcf962639ac808db4dc058f82200319aaf33d116e0bfbe71b158315e37706a1fb",
    "signature": "0xe359763887f40db68c0c5c6e187aef8a5c12b06bf31f82b5c59a0da1f94e771e085d7bbceabbe07bba58ac8c4726a91e089a46532564adbcc0c52090747539691b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}