{
  "manageEntity": {
    "action": "Save",
    "entityId": "114831290",
    "entityType": "Track",
    "nonce": "0x9aca666b8ca60c0a1b78f04b68c9a18c7aa25ac8e8bc91756789cd846f0c4478",
    "signature": "0x12e10dcd7451b2b13f8c34ffa50b883b0134d90d0977d7e39c3fe2b1318e07c07018d22fa479965dbc324320e6d27e66f8c41bcdfa642eb8ec24363df668d5641c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}