{
  "manageEntity": {
    "action": "Save",
    "entityId": "246116685",
    "entityType": "Track",
    "nonce": "0x88af94ae47cce5f4ec8e7c8881e7197eda0981686f6826125bdae740721f2179",
    "signature": "0x240197cb706da953b2c66fa6de0e74f135d713357771ee747e2468c95480d06f115c3c556f07b538e601ac7c95e004c159c6b9714778e9e3e98865a3383d853d1c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}