{
  "manageEntity": {
    "action": "Save",
    "entityId": "2067706724",
    "entityType": "Track",
    "nonce": "0x10cf267b00d6c6ec2ab9a80fe0a25a65111b700a57794358d4badb64ef0681eb",
    "signature": "0x7a8ffcd61d88842dec626220c795f60d7c6ca5e838db4fce8f450b410ff46c9b285804408ccc66d145420ddca9b5e23145234cb34d7cf54b8c969bf66b0945501b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}