{
  "manageEntity": {
    "action": "Save",
    "entityId": "1443126081",
    "entityType": "Track",
    "nonce": "0xb8f30ebb5eba8985d14d5ce6c4cee2788b62f844e1d70bef90d2241558751259",
    "signature": "0x56062d66b4c01eac8da5222adfca36ef8c8c5752d9d06d63d0c24ec2776a37d13d1c56c69fe245ecf9b01a1d77a824ce43c9a5b432979acfcb89a19c1acc4e501c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}