{
  "manageEntity": {
    "action": "Save",
    "entityId": "236770950",
    "entityType": "Track",
    "nonce": "0x6cd7941b0a4b109322e54ec7a1015ad8356f9ecc8864583ccb7c2056b20049c9",
    "signature": "0xaa3f41267292243196c62dc42298382a1ac5ba49c109ac33a16b50b46f9a756b79a8486713eaf2a32078814953003eb4a809c6db058c5c06b831e6c430cceb6e1b",
    "signer": "0x849938DF063059EbF6d907f55E72C083347C9343",
    "userId": "796529120"
  }
}