{
  "manageEntity": {
    "action": "Save",
    "entityId": "1010240",
    "entityType": "Track",
    "nonce": "0x1f01ca37ef96b5da3864ef93fb11e175ddd2aabb01cd0313495553677a479b10",
    "signature": "0x8c5bd1cf8673ee79cb8006a2bd586cad64aa9ba7b041f066a7d02bd1c59cbef00d3df0d09e9e78b4af7e0281353d9f0e1a06cc3f651bbf8b3ad1a704bb5ba5f51c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}