{
  "manageEntity": {
    "action": "Save",
    "entityId": "1505867363",
    "entityType": "Track",
    "nonce": "0xaca1d52db189dda2c62917948833786de9faea2b563e62b67ff0321712d7a667",
    "signature": "0xd14f4afd6e85d2b83bec3f0e58717cd1ecbd4d09eff431c314515c3cee4f89fc73cbc99b443b6e25d1cde58a1e85e6222d7045d982509da47bc7938e05f20cdb1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}