{
  "manageEntity": {
    "action": "Save",
    "entityId": "847805269",
    "entityType": "Track",
    "nonce": "0xbb0277dfed10fcf76dba7f3ebc10c1e9ccc6b746a8f9de321aa2dcb92cf0515b",
    "signature": "0x6910460ad6485984cca51c91afbec0d42e92edc63a58cd9ca91352d71ea4157a2b7e67cbd0ad1c095764671e9b14d8c73ab8a2b450cd8727ddb85473196adaf11c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}