{
  "manageEntity": {
    "action": "Save",
    "entityId": "276558968",
    "entityType": "Track",
    "nonce": "0xa83d83470ef9fedf79e3a93eedb50da498f660d2a7c67f7c52fa03ca53f2bfd7",
    "signature": "0xfd847d253047dc4c705074808f34a4ea02c38c3ac251f02e81b41701b04be6133a6ae368ff5f25686f5c75b42cda50334f1cb62aebd99091f9f95085ec41fea51c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}