{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182702511",
    "entityType": "Track",
    "nonce": "0x2cdec1b75e1119335ff07a3e8a73a20eea49d4a65fa2c2205288fb9bc0b1fffe",
    "signature": "0x10f47131dad32509489a9d4f33ae8d79844a2c94c5065e5d1f28bff8fb7e433b1d5449c92f78ab0bc375b3284e79c02c1a7fff3d23bb286fe93913438eb42b3c1c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}