{
  "manageEntity": {
    "action": "Save",
    "entityId": "2008655892",
    "entityType": "Track",
    "nonce": "0xbc1befc043662a48db990ac6373a2d07d192451546d7e2a9d3a9de0ac5f1ce69",
    "signature": "0x4c53345d713362aad386d8bdfd230246238d5a997c03ee47544a39d6eac95197138ccea81b12999cfbaae104464d02204349763242eba327ac84aa7a021251b31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}