{
  "manageEntity": {
    "action": "Save",
    "entityId": "1137623517",
    "entityType": "Track",
    "nonce": "0x37a2af28c268dbb4d6f622bdffa9caaf7b147a95af38e2fa105882e9d4334c00",
    "signature": "0x7216755d5f0f8f596e9757ffbea90e02cc4c70412d4c98e44f378054533f1b0e4f5466082d127afe46a6eb8d4567051ee0d8bdc911934314f0c2946cd3a860b71b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}