{
  "manageEntity": {
    "action": "Save",
    "entityId": "88010",
    "entityType": "Track",
    "nonce": "0x21bb4090689b80fc22434dadeb9a35919b0bfbb259207626ba682ee7f3a4edc7",
    "signature": "0x14a1640a33fbacf41a1fc9338686a35a7985fec3dbcba2572a5a594e072f1bcd1f5441db4e65ca642bb52a2d02138d84fe2331f9ad9b4fa617090d05e00a5afa1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}