{
  "manageEntity": {
    "action": "Save",
    "entityId": "1368158206",
    "entityType": "Track",
    "nonce": "1787799026510277918",
    "signature": "0xe9f930df2f63ef08339d76de93b4cfa15015b1d29dceca1d1f8b0b14df1d6e8c7b503a1435b4aff0922bc97bc4a5349f3b0c7a0c4afd3252ac21d2bed06573881c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}