{
  "manageEntity": {
    "action": "Save",
    "entityId": "610613234",
    "entityType": "Track",
    "nonce": "0x6cbd1ad4d6fe18482b914ae836a526c146c32fc3f47801319530cd7cbd40db77",
    "signature": "0x6eb79a6adcf61c3885b7266b10cd98eddc06e0b4db645e2f864eae564032ed85592f5a6028887ed0d13f43cc40553f4188e8e008d32f727192b39fedd5b15ee41b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}