{
  "manageEntity": {
    "action": "Update",
    "entityId": "474815071",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdef70ade13ec2e85cac81d961893cd1b609fe723a9b331d617667b1e0b87d38d",
    "signature": "0xb33d1ee46cde128050db1dc4d064b3628a4854cede1b5da9bb485b8510b393a756fceaf91a35182a7a459332643ccfe942ad5da7adf7b0ed67ff5a18d2fdb3421c",
    "signer": "0x16536b77201e79535a35790b4d7fCa77cbE129Eb",
    "userId": "474815071"
  }
}