{
  "manageEntity": {
    "action": "Save",
    "entityId": "342266",
    "entityType": "Track",
    "nonce": "0x569a1c496f6da8d653ae1e3816649e975742282443edae7519762dd14bcc637c",
    "signature": "0x85a192588ad180652fe8b8f163ee435a7f4dec9a0e66cb02154e4cfa2a73402055e6f99470b2b037195992d1cb9327735e432fb88b2af0b5ddc5fbbf31b0c9d31b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}