{
  "manageEntity": {
    "action": "Save",
    "entityId": "1996809432",
    "entityType": "Track",
    "nonce": "0x93925117c7cd7afb6b65fd27f60cc7134027edd3aafdd0c45428ae3c6e2acce2",
    "signature": "0x153086662827a3a3bc3dfe541421eafa35afcee805fd3e43f3d73d0d8032b8ec2f09516b27da3398ef1a16e0aeac5e11e60704be7a238399c68199888c1583ab1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}