{
  "manageEntity": {
    "action": "Save",
    "entityId": "228119789",
    "entityType": "Track",
    "nonce": "0x4f932ec0f5e8b763545c711043eca75e8adadb552d5cc1308421a711ba4c9bc3",
    "signature": "0x287c88c2bbc2fe28a1bbbb1456c5d843875fcfe4e95ecdfb5b25ce57647fea9c0791aa0b47788e35fe5acb02902e136135d082cb5ebf831905145d644e7cd0b71b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}