{
  "manageEntity": {
    "action": "Save",
    "entityId": "167308274",
    "entityType": "Track",
    "nonce": "0xb5c3c5ead0aa86c46a151e6c016bdcbdc5fbe9b3b3a2c3af9372a775ff6de2c5",
    "signature": "0xce6393186f052e7955e9ebeaf39581594c1770ab475902499b43209456f4f8996a69cc1aeef214ec4662d858831ed446636b7bab391f947b83d4cd1915affe061b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}