{
  "manageEntity": {
    "action": "Save",
    "entityId": "1629656119",
    "entityType": "Track",
    "nonce": "0xe70bd980dfe84808dfae49d5afed5fdbb2032a76ec170a0187cb75c0b1ef0cdb",
    "signature": "0x8e11bbf775a23368bb43640d51b73ada3084891f4979839f7df2e7f91892512d73d6a4369c13beaa00d76bd5e3c99118ba19fc2a7b41a9f387d28ce9484ee4241c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}