{
  "manageEntity": {
    "action": "Save",
    "entityId": "11609",
    "entityType": "Track",
    "nonce": "0xb5d18f3db5024ad2a671fe4094554af17ccb896d44cc8973b0a082cee798803b",
    "signature": "0x55387a81bb4c1f5634fcc32e9154bb2927d46b40c6b335dc28e1eac21b9d6a0f050148a462d3b22d1c4df313b572f91c551063f4f10f8124698a66100ab7141a1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}