{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761447376",
    "entityType": "Track",
    "nonce": "0xc1e2927089b2084b1c8740cd3a1275ee4ba1b3003e6d922171ffc7f894012794",
    "signature": "0xc56437255b04b06876dfd029a0769cf79fc28fe2b323b37828ec3059509fb49d539ef6b41d1dd929fea6b0f8f53415afd9b6f50f998f0c043cecb73ab11a9b741c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}