{
  "manageEntity": {
    "action": "Update",
    "entityId": "588125677",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb6bcee2072481c11e9c04b99b2a512599d5593eabf96604585387868bbffd0b4",
    "signature": "0xbe9deb7d6a3fe94944c182a4a372bbbe503208b5352c0d5323eb469cdc7e824246f1c3febb0dcceec15078bae6d608fab8f908beed018a35de35557632c219f31b",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}