{
  "manageEntity": {
    "action": "Save",
    "entityId": "91284",
    "entityType": "Track",
    "nonce": "0xa7442eed7cd786c666bb31e7c7b5f63c9b12a633eb7869ff64f842fdacb2a3f1",
    "signature": "0x05da6fb1f7217ee884905417fe501706724254cec77eaf560952556d61c580695dfeb5d406dac10bc3bcc44b2a3086230724dca722c8ea51ddb9bc704bd4c5d31b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}