{
  "manageEntity": {
    "action": "Save",
    "entityId": "1256225334",
    "entityType": "Track",
    "nonce": "0xb99310327d1f193c33da62dd32c1cdef69afeba625be3b7296f74084b3d91e64",
    "signature": "0x6e9afa5819cd90834705c73aa7ffd138037eddf2694f23dbcce4fb89548bf6321dc84f463af71f7c70fd72a1372e2bba77482102c5f4826fca8f6f57e7db71861b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}