{
  "manageEntity": {
    "action": "Save",
    "entityId": "713685181",
    "entityType": "Track",
    "nonce": "0xb23100860cd9fb9fc5c4031ce946da5b58b5893f5382618455c88de56f4b7c15",
    "signature": "0x71b69873caa1a6d42caa3d3b81f32afae213c99695a767fb4f64a776700ef1b025989f0651561e26f842c2c2656f4f6d04213ff44f4f8eafd8d5ec8397cb3fe71b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}