{
  "manageEntity": {
    "action": "Save",
    "entityId": "1205023069",
    "entityType": "Track",
    "nonce": "0xc04e6f20587d6b40dd216a647023070e55277534a2d313f0efed3f5b57daec7c",
    "signature": "0xf935068f150a54cbc891ab5f380a0c5cd134d08cf72ce8acdca0888cec5ebd824831e4fef9174d2a504d5dea6311a3222a098c90aa8dc02786727bf93bd15a891c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}