{
  "manageEntity": {
    "action": "Save",
    "entityId": "2127326702",
    "entityType": "Track",
    "nonce": "0x6dbc7ad6f6dba6c9d370375cfe76e9d3f4a6cd9d7f87d2f72b6a7c851c475351",
    "signature": "0xc95126d5744385315950f76c79c1069c43cd6508c60bf4830650efdacc2976262a1baa8c2dd924fff441e95bacdbf2ab5699e0b1941ba42ef32e38c2f417c2011c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}