{
  "manageEntity": {
    "action": "Save",
    "entityId": "1165815717",
    "entityType": "Track",
    "nonce": "0xd0cd6168657c3b340dc36b6c47fe49f0713a90278a40c8926397f6b628224398",
    "signature": "0xb715af4526b6c2ec2f3b7b5d0314570983c3338d32cf07ce6ebba2b9337d04e47013aba4f3404f492cbc9ca5cd3f0d3d6183008e2515557ddfcd0b0131848c6e1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}