{
  "manageEntity": {
    "action": "Save",
    "entityId": "85625",
    "entityType": "Track",
    "nonce": "0x2c1a009a2e150bfb39aa819ee12e22eb124d9a9b4b64b639c559b0ed5031f8bb",
    "signature": "0x77185a1bb5f92a1718cccab827860144389912564e08c59c4a0b3d13b674d1f43cec5be6f29c9e4756a30d8e5819469d4d6d87a04df41dc973ad633dffa463541b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}