{
  "manageEntity": {
    "action": "Save",
    "entityId": "1046852",
    "entityType": "Track",
    "nonce": "0x017a5e41cf6b6243f0d917d1fb27b474cf69ac6bf01a133bbdd345f155911526",
    "signature": "0x3d4663aeac70e01fe96ccae1faf4f149e6fba17c2432aec8227f7f1eea95a6425c845c5ebfdc0c8b6fc4caa10e785762d7916b3af8fdea18174e52f5139560a41b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}