{
  "manageEntity": {
    "action": "Save",
    "entityId": "2032955224",
    "entityType": "Track",
    "nonce": "0x2780748f422d7bc8f63a25f65ab2ac3aff6d6b81d69f559a0ac2c5b2b2a27b86",
    "signature": "0x5c5794abdedd0aae42779d04be8d17f723e48fdf5ca5e4730ec729e81d1f26d160c71ce0461932e49f678c5062b2a5ad61ba707df7e4e5e9ce3abe82af16a8c71b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}