{
  "manageEntity": {
    "action": "Save",
    "entityId": "1181892716",
    "entityType": "Track",
    "nonce": "0xcee29acdd0cfad24093c48df56fc1436fcaa5ca1e4dd7594f0909e88266acf77",
    "signature": "0xdd27e3d9e5e1b7ea7c2c3b170cdad63e0745902f113a01d09a05854edeebc5257e031ff0dcaa096a2c36787f1a88dc49aa481a42e3085dc7f1d10d0948fb9bd11b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}