{
  "manageEntity": {
    "action": "Save",
    "entityId": "241550032",
    "entityType": "Track",
    "nonce": "0x02336408083ec23dac12a0af622f3b085fc93d7b641ee6af6cf36fe852ee28c7",
    "signature": "0xe0f8d19b2f0de4bf06830df9b40b54542d0c3d2ebcd406271442fd0475b1ba886b9be30f2d589a9e75e7b2e6247e1ee41fcf8ccbaf8689943bb7ecd6f3a876e01b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}