{
  "manageEntity": {
    "action": "Update",
    "entityId": "644127200",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x945e432e39e21da3ae26679ce747b071e261b69ce00a41dc1bc20063049d1f90",
    "signature": "0x6391188c67e60b13b4419e3f0f410e990989dbc1cf5e99d43b6e0d035e01d925270adceee67267b4c05ea502261b58ad4f0d07f9ec49ca3e540da1ae62c5d6d51c",
    "signer": "0xeeC56336C95A2E36D264202a086c2920788E023e",
    "userId": "644127200"
  }
}